Description
OpenSMTPD before 6.6.4 allows remote code execution because of an out-of-bounds read in mta_io in mta_session.c for multi-line replies. Although this vulnerability affects the client side of OpenSMTPD, it is possible to attack a server because the server code launches the client code during bounce handling.
CVSS Metrics
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Attack Vector
- network
- Complexity
- low
- Privileges
- none
- User Action
- none
- Scope
- unchanged
- Confidentiality
- high
- Integrity
- high
- Availability
- high
- Weaknesses
- CWE-125
Metadata
- Primary Vendor
- OPENSMTPD
- Published
- 2/25/2020
- Last Modified
- 11/21/2024
- Source
- NIST NVD
- Note: Verify all details with official vendor sources before applying patches.
Affected Products
opensmtpd : opensmtpdcanonical : ubuntu_linuxcanonical : ubuntu_linuxfedoraproject : fedorafedoraproject : fedoradebian : debian_linuxdebian : debian_linux
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